microsoft/openvmm

Health v2 · maintenance only

Adoption not part of the score

1877 stars · 227 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

OpenVMM is a modular, cross-platform Virtual Machine Monitor (VMM) written in Rust, developed by Microsoft. It also hosts OpenHCL, a paravisor for running trusted management software inside confidential VMs.

Use cases

• run and manage virtual machines with a lightweight Rust-based VMM
• build a paravisor for confidential computing VMs
• develop and test virtualization components in Rust
• run OpenHCL inside Hyper-V VMs
• experiment with modular hypervisor architectures

When to choose

• you need a cross-platform, modular VMM written in Rust
• you are building confidential computing solutions requiring a paravisor
• you want to contribute to or extend an open-source virtualization stack
• you need fine-grained control over VM device emulation

When to avoid

• you need a mature, production-hardened hypervisor like KVM or Hyper-V for general workloads
• you only need simple desktop virtualization with a GUI
• your team is not comfortable working with low-level systems code in Rust

Facets

application · maturity active

security developer-tools security operating-systems windows rust cross-platform vmm hypervisor paravisor openhcl confidential-computing virtualization infrastructure linux

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markdown · JSON · MCP: product_card(name="microsoft/openvmm")